2 * MPEG2 transport stream (aka DVB) muxer
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/avassert.h"
23 #include "libavutil/bswap.h"
24 #include "libavutil/crc.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/opt.h"
30 #include "libavcodec/internal.h"
33 #include "avio_internal.h"
37 #define PCR_TIME_BASE 27000000
39 /* write DVB SI sections */
41 /*********************************************/
42 /* mpegts section writer */
44 typedef struct MpegTSSection {
47 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
51 typedef struct MpegTSService {
52 MpegTSSection pmt; /* MPEG2 pmt table context */
53 int sid; /* service ID */
58 int pcr_packet_period;
61 // service_type values as defined in ETSI 300 468
63 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
64 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
65 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
66 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
67 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
68 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
69 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19
71 typedef struct MpegTSWrite {
72 const AVClass *av_class;
73 MpegTSSection pat; /* MPEG2 pat table */
74 MpegTSSection sdt; /* MPEG2 sdt table context */
75 MpegTSService **services;
77 int sdt_packet_period;
79 int pat_packet_period;
84 int mux_rate; ///< set to 1 when VBR
87 int transport_stream_id;
88 int original_network_id;
96 int reemit_pat_pmt; // backward compatibility
99 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
100 #define MPEGTS_FLAG_AAC_LATM 0x02
101 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
110 int omit_video_pes_length;
113 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
114 #define DEFAULT_PES_HEADER_FREQ 16
115 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
117 /* The section length is 12 bits. The first 2 are set to 0, the remaining
118 * 10 bits should not exceed 1021. */
119 #define SECTION_LENGTH 1020
121 /* NOTE: 4 bytes must be left at the end for the crc32 */
122 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
125 unsigned char packet[TS_PACKET_SIZE];
126 const unsigned char *buf_ptr;
128 int first, b, len1, left;
130 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
133 buf[len - 4] = (crc >> 24) & 0xff;
134 buf[len - 3] = (crc >> 16) & 0xff;
135 buf[len - 2] = (crc >> 8) & 0xff;
136 buf[len - 1] = crc & 0xff;
138 /* send each packet */
141 first = buf == buf_ptr;
149 s->cc = s->cc + 1 & 0xf;
152 *q++ = 0; /* 0 offset */
153 len1 = TS_PACKET_SIZE - (q - packet);
156 memcpy(q, buf_ptr, len1);
158 /* add known padding data */
159 left = TS_PACKET_SIZE - (q - packet);
161 memset(q, 0xff, left);
163 s->write_packet(s, packet);
170 static inline void put16(uint8_t **q_ptr, int val)
179 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
180 int version, int sec_num, int last_sec_num,
181 uint8_t *buf, int len)
183 uint8_t section[1024], *q;
184 unsigned int tot_len;
185 /* reserved_future_use field must be set to 1 for SDT */
186 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
188 tot_len = 3 + 5 + len + 4;
189 /* check if not too big */
191 return AVERROR_INVALIDDATA;
195 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
197 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
202 mpegts_write_section(s, section, tot_len);
206 /*********************************************/
209 #define DEFAULT_PROVIDER_NAME "FFmpeg"
210 #define DEFAULT_SERVICE_NAME "Service01"
212 /* we retransmit the SI info at this rate */
213 #define SDT_RETRANS_TIME 500
214 #define PAT_RETRANS_TIME 100
215 #define PCR_RETRANS_TIME 20
217 typedef struct MpegTSWriteStream {
218 struct MpegTSService *service;
219 int pid; /* stream associated pid */
222 int first_pts_check; ///< first pts check needed
223 int prev_payload_key;
228 AVFormatContext *amux;
232 static void mpegts_write_pat(AVFormatContext *s)
234 MpegTSWrite *ts = s->priv_data;
235 MpegTSService *service;
236 uint8_t data[SECTION_LENGTH], *q;
240 for (i = 0; i < ts->nb_services; i++) {
241 service = ts->services[i];
242 put16(&q, service->sid);
243 put16(&q, 0xe000 | service->pmt.pid);
245 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0,
249 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
251 MpegTSWrite *ts = s->priv_data;
252 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
253 int val, stream_type, i, err = 0;
256 put16(&q, 0xe000 | service->pcr_pid);
258 program_info_length_ptr = q;
259 q += 2; /* patched after */
261 /* put program info here */
263 val = 0xf000 | (q - program_info_length_ptr - 2);
264 program_info_length_ptr[0] = val >> 8;
265 program_info_length_ptr[1] = val;
267 for (i = 0; i < s->nb_streams; i++) {
268 AVStream *st = s->streams[i];
269 MpegTSWriteStream *ts_st = st->priv_data;
270 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
272 if (q - data > SECTION_LENGTH - 32) {
276 switch (st->codec->codec_id) {
277 case AV_CODEC_ID_MPEG1VIDEO:
278 case AV_CODEC_ID_MPEG2VIDEO:
279 stream_type = STREAM_TYPE_VIDEO_MPEG2;
281 case AV_CODEC_ID_MPEG4:
282 stream_type = STREAM_TYPE_VIDEO_MPEG4;
284 case AV_CODEC_ID_H264:
285 stream_type = STREAM_TYPE_VIDEO_H264;
287 case AV_CODEC_ID_HEVC:
288 stream_type = STREAM_TYPE_VIDEO_HEVC;
290 case AV_CODEC_ID_CAVS:
291 stream_type = STREAM_TYPE_VIDEO_CAVS;
293 case AV_CODEC_ID_DIRAC:
294 stream_type = STREAM_TYPE_VIDEO_DIRAC;
296 case AV_CODEC_ID_MP2:
297 case AV_CODEC_ID_MP3:
298 stream_type = STREAM_TYPE_AUDIO_MPEG1;
300 case AV_CODEC_ID_AAC:
301 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
302 ? STREAM_TYPE_AUDIO_AAC_LATM
303 : STREAM_TYPE_AUDIO_AAC;
305 case AV_CODEC_ID_AAC_LATM:
306 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
308 case AV_CODEC_ID_AC3:
309 stream_type = STREAM_TYPE_AUDIO_AC3;
311 case AV_CODEC_ID_DTS:
312 stream_type = STREAM_TYPE_AUDIO_DTS;
314 case AV_CODEC_ID_TRUEHD:
315 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
318 stream_type = STREAM_TYPE_PRIVATE_DATA;
323 put16(&q, 0xe000 | ts_st->pid);
325 q += 2; /* patched after */
327 /* write optional descriptors here */
328 switch (st->codec->codec_type) {
329 case AVMEDIA_TYPE_AUDIO:
330 if (st->codec->codec_id==AV_CODEC_ID_EAC3) {
331 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
332 *q++=1; // 1 byte, all flags sets to 0
333 *q++=0; // omit all fields...
335 if (st->codec->codec_id==AV_CODEC_ID_S302M) {
336 *q++ = 0x05; /* MPEG-2 registration descriptor*/
346 char *next = lang->value;
349 *q++ = 0x0a; /* ISO 639 language descriptor */
353 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
354 if (q - data > SECTION_LENGTH - 4) {
358 next = strchr(p, ',');
359 if (strlen(p) != 3 && (!next || next != p + 3))
360 continue; /* not a 3-letter code */
366 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
368 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
370 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
373 *q++ = 0; /* undefined type */
379 q -= 2; /* no language codes were written */
382 case AVMEDIA_TYPE_SUBTITLE:
384 const char default_language[] = "und";
385 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
387 if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
389 int extradata_copied = 0;
391 *q++ = 0x59; /* subtitling_descriptor */
394 while (strlen(language) >= 3) {
395 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
403 if (*language != '\0')
406 if (st->codec->extradata_size - extradata_copied >= 5) {
407 *q++ = st->codec->extradata[extradata_copied + 4]; /* subtitling_type */
408 memcpy(q, st->codec->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
409 extradata_copied += 5;
413 * 0x10 - normal with no monitor aspect ratio criticality
414 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
415 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
416 if ((st->codec->extradata_size == 4) && (extradata_copied == 0)) {
417 /* support of old 4-byte extradata format */
418 memcpy(q, st->codec->extradata, 4); /* composition_page_id and ancillary_page_id */
419 extradata_copied += 4;
422 put16(&q, 1); /* composition_page_id */
423 put16(&q, 1); /* ancillary_page_id */
428 *len_ptr = q - len_ptr - 1;
429 } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
430 uint8_t *len_ptr = NULL;
431 int extradata_copied = 0;
433 /* The descriptor tag. teletext_descriptor */
437 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
442 if (*language != '\0')
445 if (st->codec->extradata_size - 1 > extradata_copied) {
446 memcpy(q, st->codec->extradata + extradata_copied, 2);
447 extradata_copied += 2;
450 /* The Teletext descriptor:
451 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
452 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
453 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
459 *len_ptr = q - len_ptr - 1;
463 case AVMEDIA_TYPE_VIDEO:
464 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
465 *q++ = 0x05; /*MPEG-2 registration descriptor*/
473 case AVMEDIA_TYPE_DATA:
474 if (st->codec->codec_id == AV_CODEC_ID_SMPTE_KLV) {
475 *q++ = 0x05; /* MPEG-2 registration descriptor */
485 val = 0xf000 | (q - desc_length_ptr - 2);
486 desc_length_ptr[0] = val >> 8;
487 desc_length_ptr[1] = val;
491 av_log(s, AV_LOG_ERROR,
492 "The PMT section cannot fit stream %d and all following streams.\n"
493 "Try reducing the number of languages in the audio streams "
494 "or the total number of streams.\n", i);
496 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
501 /* NOTE: !str is accepted for an empty string */
502 static void putstr8(uint8_t **q_ptr, const char *str)
518 static void mpegts_write_sdt(AVFormatContext *s)
520 MpegTSWrite *ts = s->priv_data;
521 MpegTSService *service;
522 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
523 int i, running_status, free_ca_mode, val;
528 for (i = 0; i < ts->nb_services; i++) {
529 service = ts->services[i];
530 put16(&q, service->sid);
531 *q++ = 0xfc | 0x00; /* currently no EIT info */
532 desc_list_len_ptr = q;
534 running_status = 4; /* running */
537 /* write only one descriptor for the service name and provider */
541 *q++ = ts->service_type;
542 putstr8(&q, service->provider_name);
543 putstr8(&q, service->name);
544 desc_len_ptr[0] = q - desc_len_ptr - 1;
546 /* fill descriptor length */
547 val = (running_status << 13) | (free_ca_mode << 12) |
548 (q - desc_list_len_ptr - 2);
549 desc_list_len_ptr[0] = val >> 8;
550 desc_list_len_ptr[1] = val;
552 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0,
556 static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid,
557 const char *provider_name,
560 MpegTSService *service;
562 service = av_mallocz(sizeof(MpegTSService));
565 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
567 service->pcr_pid = 0x1fff;
568 service->provider_name = av_strdup(provider_name);
569 service->name = av_strdup(name);
570 if (!service->provider_name || !service->name)
572 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
577 av_freep(&service->provider_name);
578 av_freep(&service->name);
583 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
585 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
589 static void mpegts_prefix_m2ts_header(AVFormatContext *s)
591 MpegTSWrite *ts = s->priv_data;
593 int64_t pcr = get_pcr(s->priv_data, s->pb);
594 uint32_t tp_extra_header = pcr % 0x3fffffff;
595 tp_extra_header = AV_RB32(&tp_extra_header);
596 avio_write(s->pb, (unsigned char *) &tp_extra_header,
597 sizeof(tp_extra_header));
601 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
603 AVFormatContext *ctx = s->opaque;
604 mpegts_prefix_m2ts_header(ctx);
605 avio_write(ctx->pb, packet, TS_PACKET_SIZE);
608 static int mpegts_write_header(AVFormatContext *s)
610 MpegTSWrite *ts = s->priv_data;
611 MpegTSWriteStream *ts_st;
612 MpegTSService *service;
613 AVStream *st, *pcr_st = NULL;
614 AVDictionaryEntry *title, *provider;
616 const char *service_name;
617 const char *provider_name;
621 if (s->max_delay < 0) /* Not set by the caller */
624 // round up to a whole number of TS packets
625 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
627 ts->tsid = ts->transport_stream_id;
628 ts->onid = ts->original_network_id;
629 /* allocate a single DVB service */
630 title = av_dict_get(s->metadata, "service_name", NULL, 0);
632 title = av_dict_get(s->metadata, "title", NULL, 0);
633 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
634 provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
635 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
636 service = mpegts_add_service(ts, ts->service_id,
637 provider_name, service_name);
640 return AVERROR(ENOMEM);
642 service->pmt.write_packet = section_write_packet;
643 service->pmt.opaque = s;
644 service->pmt.cc = 15;
646 ts->pat.pid = PAT_PID;
647 /* Initialize at 15 so that it wraps and is equal to 0 for the
648 * first packet we write. */
650 ts->pat.write_packet = section_write_packet;
653 ts->sdt.pid = SDT_PID;
655 ts->sdt.write_packet = section_write_packet;
658 pids = av_malloc_array(s->nb_streams, sizeof(*pids));
660 ret = AVERROR(ENOMEM);
664 /* assign pids to each stream */
665 for (i = 0; i < s->nb_streams; i++) {
668 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
670 ret = AVERROR(ENOMEM);
673 st->priv_data = ts_st;
675 ts_st->user_tb = st->time_base;
676 avpriv_set_pts_info(st, 33, 1, 90000);
678 ts_st->payload = av_mallocz(ts->pes_payload_size);
679 if (!ts_st->payload) {
680 ret = AVERROR(ENOMEM);
683 ts_st->service = service;
684 /* MPEG pid values < 16 are reserved. Applications which set st->id in
685 * this range are assigned a calculated pid. */
687 ts_st->pid = ts->start_pid + i;
688 } else if (st->id < 0x1FFF) {
691 av_log(s, AV_LOG_ERROR,
692 "Invalid stream id %d, must be less than 8191\n", st->id);
693 ret = AVERROR(EINVAL);
696 if (ts_st->pid == service->pmt.pid) {
697 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
698 ret = AVERROR(EINVAL);
701 for (j = 0; j < i; j++) {
702 if (pids[j] == ts_st->pid) {
703 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
704 ret = AVERROR(EINVAL);
708 pids[i] = ts_st->pid;
709 ts_st->payload_pts = AV_NOPTS_VALUE;
710 ts_st->payload_dts = AV_NOPTS_VALUE;
711 ts_st->first_pts_check = 1;
713 /* update PCR pid by using the first video stream */
714 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
715 service->pcr_pid == 0x1fff) {
716 service->pcr_pid = ts_st->pid;
719 if (st->codec->codec_id == AV_CODEC_ID_AAC &&
720 st->codec->extradata_size > 0) {
722 ts_st->amux = avformat_alloc_context();
724 ret = AVERROR(ENOMEM);
727 ts_st->amux->oformat =
728 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
730 if (!ts_st->amux->oformat) {
731 ret = AVERROR(EINVAL);
734 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
735 ret = AVERROR(ENOMEM);
738 ret = avcodec_copy_context(ast->codec, st->codec);
741 ast->time_base = st->time_base;
742 ret = avformat_write_header(ts_st->amux, NULL);
750 /* if no video stream, use the first stream as PCR */
751 if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
752 pcr_st = s->streams[0];
753 ts_st = pcr_st->priv_data;
754 service->pcr_pid = ts_st->pid;
756 ts_st = pcr_st->priv_data;
758 if (ts->mux_rate > 1) {
759 service->pcr_packet_period = (ts->mux_rate * ts->pcr_period) /
760 (TS_PACKET_SIZE * 8 * 1000);
761 ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) /
762 (TS_PACKET_SIZE * 8 * 1000);
763 ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) /
764 (TS_PACKET_SIZE * 8 * 1000);
767 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
769 /* Arbitrary values, PAT/PMT will also be written on video key frames */
770 ts->sdt_packet_period = 200;
771 ts->pat_packet_period = 40;
772 if (pcr_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
773 if (!pcr_st->codec->frame_size) {
774 av_log(s, AV_LOG_WARNING, "frame size not set\n");
775 service->pcr_packet_period =
776 pcr_st->codec->sample_rate / (10 * 512);
778 service->pcr_packet_period =
779 pcr_st->codec->sample_rate / (10 * pcr_st->codec->frame_size);
782 // max delta PCR 0.1s
783 // TODO: should be avg_frame_rate
784 service->pcr_packet_period =
785 ts_st->user_tb.den / (10 * ts_st->user_tb.num);
787 if (!service->pcr_packet_period)
788 service->pcr_packet_period = 1;
791 ts->last_pat_ts = AV_NOPTS_VALUE;
792 ts->last_sdt_ts = AV_NOPTS_VALUE;
793 // The user specified a period, use only it
794 if (ts->pat_period < INT_MAX/2) {
795 ts->pat_packet_period = INT_MAX;
797 if (ts->sdt_period < INT_MAX/2) {
798 ts->sdt_packet_period = INT_MAX;
801 // output a PCR as soon as possible
802 service->pcr_packet_count = service->pcr_packet_period;
803 ts->pat_packet_count = ts->pat_packet_period - 1;
804 ts->sdt_packet_count = ts->sdt_packet_period - 1;
806 if (ts->mux_rate == 1)
807 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
809 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
810 av_log(s, AV_LOG_VERBOSE,
811 "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
812 service->pcr_packet_period,
813 ts->sdt_packet_period, ts->pat_packet_period);
815 if (ts->m2ts_mode == -1) {
816 if (av_match_ext(s->filename, "m2ts")) {
827 for (i = 0; i < s->nb_streams; i++) {
829 ts_st = st->priv_data;
831 av_freep(&ts_st->payload);
833 avformat_free_context(ts_st->amux);
837 av_freep(&st->priv_data);
840 for (i = 0; i < ts->nb_services; i++) {
841 service = ts->services[i];
842 av_freep(&service->provider_name);
843 av_freep(&service->name);
846 av_freep(&ts->services);
850 /* send SDT, PAT and PMT tables regulary */
851 static void retransmit_si_info(AVFormatContext *s, int force_pat, int64_t dts)
853 MpegTSWrite *ts = s->priv_data;
856 if (++ts->sdt_packet_count == ts->sdt_packet_period ||
857 (dts != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
858 (dts != AV_NOPTS_VALUE && dts - ts->last_sdt_ts >= ts->sdt_period*90000.0)
860 ts->sdt_packet_count = 0;
861 if (dts != AV_NOPTS_VALUE)
862 ts->last_sdt_ts = FFMAX(dts, ts->last_sdt_ts);
865 if (++ts->pat_packet_count == ts->pat_packet_period ||
866 (dts != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
867 (dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) ||
869 ts->pat_packet_count = 0;
870 if (dts != AV_NOPTS_VALUE)
871 ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts);
873 for (i = 0; i < ts->nb_services; i++)
874 mpegts_write_pmt(s, ts->services[i]);
878 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
880 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
882 *buf++ = pcr_high >> 25;
883 *buf++ = pcr_high >> 17;
884 *buf++ = pcr_high >> 9;
885 *buf++ = pcr_high >> 1;
886 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
892 /* Write a single null transport stream packet */
893 static void mpegts_insert_null_packet(AVFormatContext *s)
896 uint8_t buf[TS_PACKET_SIZE];
903 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
904 mpegts_prefix_m2ts_header(s);
905 avio_write(s->pb, buf, TS_PACKET_SIZE);
908 /* Write a single transport stream packet with a PCR and no payload */
909 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
911 MpegTSWrite *ts = s->priv_data;
912 MpegTSWriteStream *ts_st = st->priv_data;
914 uint8_t buf[TS_PACKET_SIZE];
918 *q++ = ts_st->pid >> 8;
920 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
921 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
922 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
923 *q++ = 0x10; /* Adaptation flags: PCR present */
925 /* PCR coded into 6 bytes */
926 q += write_pcr_bits(q, get_pcr(ts, s->pb));
929 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
930 mpegts_prefix_m2ts_header(s);
931 avio_write(s->pb, buf, TS_PACKET_SIZE);
934 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
938 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
940 val = (((pts >> 15) & 0x7fff) << 1) | 1;
943 val = (((pts) & 0x7fff) << 1) | 1;
948 /* Set an adaptation field flag in an MPEG-TS packet*/
949 static void set_af_flag(uint8_t *pkt, int flag)
951 // expect at least one flag to set
954 if ((pkt[3] & 0x20) == 0) {
955 // no AF yet, set adaptation field flag
957 // 1 byte length, no flags
964 /* Extend the adaptation field by size bytes */
965 static void extend_af(uint8_t *pkt, int size)
967 // expect already existing adaptation field
968 av_assert0(pkt[3] & 0x20);
972 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
973 static uint8_t *get_ts_payload_start(uint8_t *pkt)
976 return pkt + 5 + pkt[4];
981 /* Add a PES header to the front of the payload, and segment into an integer
982 * number of TS packets. The final TS packet is padded using an oversized
983 * adaptation header to exactly fill the last TS packet.
984 * NOTE: 'payload' contains a complete PES payload. */
985 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
986 const uint8_t *payload, int payload_size,
987 int64_t pts, int64_t dts, int key)
989 MpegTSWriteStream *ts_st = st->priv_data;
990 MpegTSWrite *ts = s->priv_data;
991 uint8_t buf[TS_PACKET_SIZE];
993 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
994 int afc_len, stuffing_len;
995 int64_t pcr = -1; /* avoid warning */
996 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
997 int force_pat = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
999 av_assert0(ts_st->payload != buf || st->codec->codec_type != AVMEDIA_TYPE_VIDEO);
1000 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1005 while (payload_size > 0) {
1006 retransmit_si_info(s, force_pat, dts);
1010 if (ts_st->pid == ts_st->service->pcr_pid) {
1011 if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames
1012 ts_st->service->pcr_packet_count++;
1013 if (ts_st->service->pcr_packet_count >=
1014 ts_st->service->pcr_packet_period) {
1015 ts_st->service->pcr_packet_count = 0;
1020 if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE &&
1021 (dts - get_pcr(ts, s->pb) / 300) > delay) {
1022 /* pcr insert gets priority over null packet insert */
1024 mpegts_insert_pcr_only(s, st);
1026 mpegts_insert_null_packet(s);
1027 /* recalculate write_pcr and possibly retransmit si_info */
1031 /* prepare packet header */
1034 val = ts_st->pid >> 8;
1039 ts_st->cc = ts_st->cc + 1 & 0xf;
1040 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1041 if (key && is_start && pts != AV_NOPTS_VALUE) {
1042 // set Random Access for key frames
1043 if (ts_st->pid == ts_st->service->pcr_pid)
1045 set_af_flag(buf, 0x40);
1046 q = get_ts_payload_start(buf);
1049 set_af_flag(buf, 0x10);
1050 q = get_ts_payload_start(buf);
1051 // add 11, pcr references the last byte of program clock reference base
1052 if (ts->mux_rate > 1)
1053 pcr = get_pcr(ts, s->pb);
1055 pcr = (dts - delay) * 300;
1056 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1057 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1058 extend_af(buf, write_pcr_bits(q, pcr));
1059 q = get_ts_payload_start(buf);
1062 int pes_extension = 0;
1063 int pes_header_stuffing_bytes = 0;
1064 /* write PES header */
1068 is_dvb_subtitle = 0;
1069 is_dvb_teletext = 0;
1070 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1071 if (st->codec->codec_id == AV_CODEC_ID_DIRAC)
1075 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1076 (st->codec->codec_id == AV_CODEC_ID_MP2 ||
1077 st->codec->codec_id == AV_CODEC_ID_MP3 ||
1078 st->codec->codec_id == AV_CODEC_ID_AAC)) {
1080 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1081 st->codec->codec_id == AV_CODEC_ID_AC3 &&
1086 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1087 if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1088 is_dvb_subtitle = 1;
1089 } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1090 is_dvb_teletext = 1;
1096 if (pts != AV_NOPTS_VALUE) {
1100 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1104 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1105 st->codec->codec_id == AV_CODEC_ID_DIRAC) {
1106 /* set PES_extension_flag */
1110 /* One byte for PES2 extension flag +
1111 * one byte for extension length +
1112 * one byte for extension id */
1115 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1116 * otherwise it will not play sound on blu-ray
1118 if (ts->m2ts_mode &&
1119 st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1120 st->codec->codec_id == AV_CODEC_ID_AC3) {
1121 /* set PES_extension_flag */
1126 if (is_dvb_teletext) {
1127 pes_header_stuffing_bytes = 0x24 - header_len;
1130 len = payload_size + header_len + 3;
1131 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1132 if (is_dvb_subtitle) {
1138 if (ts->omit_video_pes_length && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1144 /* data alignment indicator is required for subtitle and data streams */
1145 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA)
1150 if (pts != AV_NOPTS_VALUE) {
1151 write_pts(q, flags >> 6, pts);
1154 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1155 write_pts(q, 1, dts);
1158 if (pes_extension && st->codec->codec_id == AV_CODEC_ID_DIRAC) {
1159 flags = 0x01; /* set PES_extension_flag_2 */
1161 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1162 /* Set the stream ID extension flag bit to 0 and
1163 * write the extended stream ID. */
1166 /* For Blu-ray AC3 Audio Setting extended flags */
1167 if (ts->m2ts_mode &&
1169 st->codec->codec_id == AV_CODEC_ID_AC3) {
1170 flags = 0x01; /* set PES_extension_flag_2 */
1172 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1173 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1177 if (is_dvb_subtitle) {
1178 /* First two fields of DVB subtitles PES data:
1179 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1180 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1184 if (is_dvb_teletext) {
1185 memset(q, 0xff, pes_header_stuffing_bytes);
1186 q += pes_header_stuffing_bytes;
1191 header_len = q - buf;
1193 len = TS_PACKET_SIZE - header_len;
1194 if (len > payload_size)
1196 stuffing_len = TS_PACKET_SIZE - header_len - len;
1197 if (stuffing_len > 0) {
1198 /* add stuffing with AFC */
1199 if (buf[3] & 0x20) {
1200 /* stuffing already present: increase its size */
1201 afc_len = buf[4] + 1;
1202 memmove(buf + 4 + afc_len + stuffing_len,
1204 header_len - (4 + afc_len));
1205 buf[4] += stuffing_len;
1206 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1209 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1211 buf[4] = stuffing_len - 1;
1212 if (stuffing_len >= 2) {
1214 memset(buf + 6, 0xff, stuffing_len - 2);
1219 if (is_dvb_subtitle && payload_size == len) {
1220 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1221 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1223 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1227 payload_size -= len;
1228 mpegts_prefix_m2ts_header(s);
1229 avio_write(s->pb, buf, TS_PACKET_SIZE);
1231 ts_st->prev_payload_key = key;
1234 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1236 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1237 if (!st->nb_frames) {
1238 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1239 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1240 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1241 return AVERROR_INVALIDDATA;
1243 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1244 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1245 av_log(s, AV_LOG_WARNING, "\n");
1250 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1252 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1253 if (!st->nb_frames) {
1254 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1255 return AVERROR_PATCHWELCOME;
1257 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1258 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1259 av_log(s, AV_LOG_WARNING, "\n");
1264 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1266 AVStream *st = s->streams[pkt->stream_index];
1267 int size = pkt->size;
1268 uint8_t *buf = pkt->data;
1269 uint8_t *data = NULL;
1270 MpegTSWrite *ts = s->priv_data;
1271 MpegTSWriteStream *ts_st = st->priv_data;
1272 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1273 int64_t dts = pkt->dts, pts = pkt->pts;
1275 if (ts->reemit_pat_pmt) {
1276 av_log(s, AV_LOG_WARNING,
1277 "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
1278 ts->reemit_pat_pmt = 0;
1279 ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
1282 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1283 ts->pat_packet_count = ts->pat_packet_period - 1;
1284 ts->sdt_packet_count = ts->sdt_packet_period - 1;
1285 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1288 if (ts->copyts < 1) {
1289 if (pts != AV_NOPTS_VALUE)
1291 if (dts != AV_NOPTS_VALUE)
1295 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1296 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1297 return AVERROR_INVALIDDATA;
1299 ts_st->first_pts_check = 0;
1301 if (st->codec->codec_id == AV_CODEC_ID_H264) {
1302 const uint8_t *p = buf, *buf_end = p + size;
1303 uint32_t state = -1;
1304 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codec->extradata_size : 0;
1305 int ret = ff_check_h264_startcode(s, st, pkt);
1309 if (extradd && AV_RB24(st->codec->extradata) > 1)
1313 p = avpriv_find_start_code(p, buf_end, &state);
1314 av_log(s, AV_LOG_TRACE, "nal %d\n", state & 0x1f);
1315 if ((state & 0x1f) == 7)
1317 } while (p < buf_end && (state & 0x1f) != 9 &&
1318 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1320 if ((state & 0x1f) != 5)
1322 if ((state & 0x1f) != 9) { // AUD NAL
1323 data = av_malloc(pkt->size + 6 + extradd);
1325 return AVERROR(ENOMEM);
1326 memcpy(data + 6, st->codec->extradata, extradd);
1327 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1328 AV_WB32(data, 0x00000001);
1330 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1332 size = pkt->size + 6 + extradd;
1334 } else if (st->codec->codec_id == AV_CODEC_ID_AAC) {
1335 if (pkt->size < 2) {
1336 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1337 return AVERROR_INVALIDDATA;
1339 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1344 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1345 "and extradata missing\n");
1347 return AVERROR_INVALIDDATA;
1349 av_init_packet(&pkt2);
1350 pkt2.data = pkt->data;
1351 pkt2.size = pkt->size;
1352 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1353 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1355 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1357 return AVERROR(ENOMEM);
1359 ret = av_write_frame(ts_st->amux, &pkt2);
1361 ffio_free_dyn_buf(&ts_st->amux->pb);
1364 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1365 ts_st->amux->pb = NULL;
1369 } else if (st->codec->codec_id == AV_CODEC_ID_HEVC) {
1370 int ret = check_hevc_startcode(s, st, pkt);
1375 if (pkt->dts != AV_NOPTS_VALUE) {
1377 for(i=0; i<s->nb_streams; i++) {
1378 AVStream *st2 = s->streams[i];
1379 MpegTSWriteStream *ts_st2 = st2->priv_data;
1380 if ( ts_st2->payload_size
1381 && (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) {
1382 mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size,
1383 ts_st2->payload_pts, ts_st2->payload_dts,
1384 ts_st2->payload_flags & AV_PKT_FLAG_KEY);
1385 ts_st2->payload_size = 0;
1390 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1391 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1392 av_compare_ts(dts - ts_st->payload_dts, st->time_base,
1393 s->max_delay, AV_TIME_BASE_Q) >= 0))) {
1394 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1395 ts_st->payload_pts, ts_st->payload_dts,
1396 ts_st->payload_flags & AV_PKT_FLAG_KEY);
1397 ts_st->payload_size = 0;
1400 if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1401 av_assert0(!ts_st->payload_size);
1402 // for video and subtitle, write a single pes packet
1403 mpegts_write_pes(s, st, buf, size, pts, dts,
1404 pkt->flags & AV_PKT_FLAG_KEY);
1409 if (!ts_st->payload_size) {
1410 ts_st->payload_pts = pts;
1411 ts_st->payload_dts = dts;
1412 ts_st->payload_flags = pkt->flags;
1415 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1416 ts_st->payload_size += size;
1423 static void mpegts_write_flush(AVFormatContext *s)
1427 /* flush current packets */
1428 for (i = 0; i < s->nb_streams; i++) {
1429 AVStream *st = s->streams[i];
1430 MpegTSWriteStream *ts_st = st->priv_data;
1431 if (ts_st->payload_size > 0) {
1432 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1433 ts_st->payload_pts, ts_st->payload_dts,
1434 ts_st->payload_flags & AV_PKT_FLAG_KEY);
1435 ts_st->payload_size = 0;
1440 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1443 mpegts_write_flush(s);
1446 return mpegts_write_packet_internal(s, pkt);
1450 static int mpegts_write_end(AVFormatContext *s)
1452 MpegTSWrite *ts = s->priv_data;
1453 MpegTSService *service;
1457 mpegts_write_flush(s);
1459 for (i = 0; i < s->nb_streams; i++) {
1460 AVStream *st = s->streams[i];
1461 MpegTSWriteStream *ts_st = st->priv_data;
1462 av_freep(&ts_st->payload);
1464 avformat_free_context(ts_st->amux);
1469 for (i = 0; i < ts->nb_services; i++) {
1470 service = ts->services[i];
1471 av_freep(&service->provider_name);
1472 av_freep(&service->name);
1475 av_freep(&ts->services);
1480 static const AVOption options[] = {
1481 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1482 offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
1483 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1484 { "mpegts_original_network_id", "Set original_network_id field.",
1485 offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
1486 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1487 { "mpegts_service_id", "Set service_id field.",
1488 offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
1489 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1490 { "mpegts_service_type", "Set service_type field.",
1491 offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
1492 { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1493 { "digital_tv", "Digital Television.",
1494 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
1495 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1496 { "digital_radio", "Digital Radio.",
1497 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
1498 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1499 { "teletext", "Teletext.",
1500 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
1501 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1502 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
1503 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
1504 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1505 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
1506 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
1507 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1508 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
1509 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
1510 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1511 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
1512 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
1513 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1514 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
1515 offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
1516 { .i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM },
1517 { "mpegts_start_pid", "Set the first pid.",
1518 offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
1519 { .i64 = 0x0100 }, 0x0020, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM },
1520 { "mpegts_m2ts_mode", "Enable m2ts mode.",
1521 offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_INT,
1522 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1524 offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
1525 { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1526 { "pes_payload_size", "Minimum PES packet payload in bytes",
1527 offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
1528 { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1529 { "mpegts_flags", "MPEG-TS muxing flags",
1530 offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX,
1531 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1532 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1533 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
1534 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1535 { "latm", "Use LATM packetization for AAC",
1536 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
1537 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1538 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
1539 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
1540 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1541 // backward compatibility
1542 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1543 offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT,
1544 { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1545 { "mpegts_copyts", "don't offset dts/pts",
1546 offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_INT,
1547 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1548 { "tables_version", "set PAT, PMT and SDT version",
1549 offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
1550 { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM },
1551 { "omit_video_pes_length", "Omit the PES packet length for video packets",
1552 offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_INT,
1553 { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
1554 { "pcr_period", "PCR retransmission time",
1555 offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT,
1556 { .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1557 { "pat_period", "PAT/PMT retransmission time limit in seconds",
1558 offsetof(MpegTSWrite, pat_period), AV_OPT_TYPE_DOUBLE,
1559 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1560 { "sdt_period", "SDT retransmission time limit in seconds",
1561 offsetof(MpegTSWrite, sdt_period), AV_OPT_TYPE_DOUBLE,
1562 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1566 static const AVClass mpegts_muxer_class = {
1567 .class_name = "MPEGTS muxer",
1568 .item_name = av_default_item_name,
1570 .version = LIBAVUTIL_VERSION_INT,
1573 AVOutputFormat ff_mpegts_muxer = {
1575 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
1576 .mime_type = "video/MP2T",
1577 .extensions = "ts,m2t,m2ts,mts",
1578 .priv_data_size = sizeof(MpegTSWrite),
1579 .audio_codec = AV_CODEC_ID_MP2,
1580 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
1581 .write_header = mpegts_write_header,
1582 .write_packet = mpegts_write_packet,
1583 .write_trailer = mpegts_write_end,
1584 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS,
1585 .priv_class = &mpegts_muxer_class,